According to one of the former NASA scientists, alien life was discovered back in 1970, when the mission to Mars revealed evidence of microorganisms that could not be explained. He believes that at this point is where the share for extraterrestrial life ended.
Gilbert Levin, a former NASA scientist, in an op-ed titled, ‘I’m Convinced We Found Evidence of Life on Mars in the 1970s’, which was published in Scientific American, believes that during the mission to Mars there was indisputable evidence of biological life on some of the other planets.
Levin writes, What is the evidence against the possibility of life on Mars? The astonishing fact is that there is none. He goes on to state that there were studies done in the lab that have shown that some alien microorganisms may survive and actually grow on Mars.’
The NASA’s first trip to Mars using the Viking Landers 1 and 2 during the 1976 missions is what Mr Levin refers to. While there, the Landers took several samples from the Martian soil in an attempt to search contents for signs of biological life.
A test lead by Gilbert Levin called the Labeled Release Life Detection Experiment, involved combining the soil taken from Mars with organic compounds in an attempt to find carbon dioxide.
Levin stated, that if there were any microorganisms within the soil, they would have metabolized the added compounds which would have resulted in the release of carbon dioxide.
Four positive results were observed from these tests and then confirmed by both the Landers which were located more that 4,000 meters from each other on the planet.
When NASA decided to search for specific microorganisms, the results were less than positive, despite the initial success from Levin and his team. According to the agency, the tests ‘provided no clear evidence for the presence of living microorganisms in soil near the landing sites.’
Regardless of this, Levin continues to state that evidence of alien life has been strengthened by other discoveries which occurred since the Viking missions. The evidence he speaks of are the findings of water and also other organic compounds. Plus the subsequent failure of 43 studies to provide direct explanations of the findings.
Levin has made the suggestion that for any future explorations of the Red Planet should include equipment with capabilities of discerning microorganisms in a more precise manner. However, NASA has stated that for their 2020 Mars lander, there will be no equipment for detecting life on the vessel.